Printing apparatus.



T. 8. FOX.

PRINTING APPARATUS.

APPLICATION FILED OCT. 10, 1916.

1 26,491 Patented Dec. 30, 1919.

THOMAS S. FOX, OF BROOKLYN, NEW YORK.

PRINTING APIPARATUS.

Specification of Letters Patent.

Patented Dec. 30, 1919.

Application filed. Qctober 10, 1916. Serial No. 12 1,8130.

1 b all whom it may concern:

Be it known that I, Tnoams S. Fox, a citizen of the United States, residing at the borough of Brooklyn, in the county of Kmgs and State of New York, have invented certain new and useful Improvements in Pr nting Apparatus, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements 1n printing devices and more particularly has reference to a support particularly well adapted for and illustrated in the accompanying drawing as applied for shifting transparent printing films for laying down lines, dots, dashes and similar characters 111 the preparation of printing surfaces, and this application is in the nature of a continuation of and an improvement upon my c0- pending application Serial No. 579,6 1%.

In the accompanying drawing 1 have illustrated the same in perspective view as adapted to be applied to a drawing board or table and to be used as hereinafter more fully set forth.

1 indicates a suitable bar or bracket which may be suitably clamped or otherwise secured to a table or board and 2 indicates the base of my apparatus which may be suitably clamped or secured to. said bar or bracket. The upper portion of the base 2 is preferably semicircular as shown and said base or support is also preferably provided with a depending portion 2". At the center of the semicircular portion of my base support a hole is provided adapted to receive the fiat-headed bolt or pin 3 the same passing through the rotatable disk 33 so as to prevent lateral movement between the base and said disk 33, but permitting of relative rotation thereof. 5 indicates a projection secured upon the base portion 2 provided with an overhanging portion 5 through which the binding screw 6 is adapted to pass and bear upon the tongue 7 secured upon said binding member 5 so as to force same tightly upon the rotatable plate 1 rotatable with the disk 33' and slidably mounted thereupon thereby facilitating the binding of the Plate 4 with reference to the base 2after the same has been rotated the desired amount.

7 is a split ring upon opposite sides of which are mounted or suitably secured thereto the standard 8-8. The standard 8 is at one side of the split in said ring and another standard 9 is at the other side or end of the same and is provided with a thumb screw 10 the end of which is adapted to bear against the opposite standard 8 so that as the thumb screw 10 is turned clockwise the ring 7 is expanded within the central circular binding of the plate a within which it is otherwise free to rotate, thus making it possible to bind the ring 7 in any predetermined position within the plate 1. The clips 11 may be secured to the ring 7 to bear upon the plate 1 if desired.

The bar 12 is also preferably screwed to the standards 8-8 as shown and the carriage 13 having the sides14-15 is preferably slidably mounted upon the bar 12 and upon the disk 33 and may be provided with suitable resilient members such as 16 between said sides 14l15 of the carriage 18 and the bar 12 as shown. Said bar 12 is also pro vided with a lateral piece 17 which may be suitably secured thereto. The side 14 of the carriage is also preferably provided with a threaded member 18, provided with a hollow end to receive the spring 19 as indicated at 20, said spring having internally slidably mounted therein a pin or rod 21 loosely mounted between the inner end of the threaded member 18 and the bearing 17 which is also provided with a hole to receive the same, said hole in the bearing 17 and in the end of the threaded member 18 being of less diameter than the spring 19 so that as the bearing 17 and threaded mem ber 18 are brought together the spring 19 upon the pin 21 may be compressed therebetween. 22 is a protractor adapted to be turned between the fingers and provided with a threaded shank or screw portion 23 which passes through the standard or side 15 from which it will be seen that as the protractor is rotated a predetermined amount clockwise the plate 4 is moved leftwardly with reference to the base 2. 2a is an indicator suitably secured to the bar 12 which facilitates more accurate adjustment of the protractor 22. It will of course be understood that the hole 25 through the base of the carriage 13 is sufliciently large to permit the lateral adjustment thereof with reference to the head of bolt 3.

26 is a cutaway disk or partially circular plate provided with a projection. 27 and de pending portion 28 through which the thumb screw 29 may be turned to engage the periphery of the base 2', and 30 is a beveled hole through the projection 27 which facilitates observation of the scale or protractor 32 upon said base 2, so that the disk 33 may be rotated a predetermined amount' with reference to said base. The disk 33 is also provided with standards 3el3a which also provide slidable support for the bar 35 said standards being formed with or secured upon said disk and said standards are also provided with threaded member 36 and the protractor 37 provided with threaded shank 38. i

39 is a lug or standard projecting upwardly from the plate or carriage 13 and the pin 40 upon which the spring 41 is mounted between the threaded members 36 and 38, bears against the face of the lug though the pin 40 is able to slide lengthwise a short distance therein so that after the threaded member 36 has been properly adjusted when the protractor 37 is turned rightwardly the plate 4 is moved upwardly with reference to the base 2 through the carriage 13 and split ring above described.

From the foregoing it will be observed that after the device has been suitably secured by the base or projections thereof 2 to the bar or bracket 1 of the table or board thumb screw 10 may be loosened thus loosening the ring 7 so as to facilitate the rotation of the carriages 1333 and their respective mechanisms, after which the thumb screw 10 may be tightened to hold the parts in their adjusted position. For rotating the device the banal or its brackets or any other convenient attached part thereof may be engaged by one or both hands.

lFor shifting the film laterally the protractor 22 may now be rotated against the action of the spring 19 and for shifting it longitudinally, that is to say, up or down this protractor 37 may be rotated against the action of the spring 41, thus facilitating the lengthening of dots laid down by the film into dashes or for thickening the lines, all of which is well known in the printing art. The protractor 22 shifts the entire film support ll-1 laterally, while the protractor 37 shifts the same longitudinally.

A suitable plate or cap may be laid across the standards 1d-15 and 3434 and may be secured by screws such as 42 if desired and screws such as 43 may be passed through the sides of the standards if desired, to bind the bars 12 and 35 in any fixed position.

Of course it will be understood that various modifications may be made in the con struction and arrangement of parts without departing from the spirit of the invention as claimed.

I claim j 1. In a device of the class described, a base portion and a rotatable film carrier mounted thereon, laterally shifting mechanism mounted substantially concentrically with respect to said film carrier and adapted to shift the same.

2. In a device of the class described, a base portion and a rotatable film carrier mounted thereon, laterally shifting mechanism mounted substantially concentrically with respect to said film carrier and adapted to shift the same, and means for measuring the movement of said film carrier and said laterally shifting mechanism. a

v 3. In a device of the class described, a base portion and a rotatable film carrier having a support mounted thereon, laterally shift ing mechanism mounted substantially concentrically with respect to said film carrier and adapted to shift the same, means for measuring the n'iovement of said film carrier and said laterally shifting mechanism, said film carrier and laterally shifting mechanism and the support therefor being substantially concentrically mounted.

I In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

THOMAS S. FOX. 

